NBC Says 'Thank God' in April

Forced to improvise between story arcs on "Heroes" in the spring, NBC is going to, well, improvise.

The network will roll out a new improv comedy series called "Thank God You're Here" at 9 p.m. ET Monday, April 9. It will remain in the "Heroes" timeslot the following week, then move to its regular home -- 8 p.m. Wednesdays -- on April 18.

The two Monday airings are designed to give the show, hosted by actor-comedian David Alan Grier, a leg up with "Deal or No Deal" as its lead-in. New episodes of "Heroes" aren't slated to be back on NBC's schedule until later in April.

"Thank God You're Here" also shouldn't affect the current occupant of the 8 p.m. Wednesday slot, "Friday Night Lights." The network has aired only a few repeats of "Lights" this season, so it should be done for the year by then.

Based an Australian show, "Thank God You're Here" will feature a rotating cast of comedians who have to think and act on the fly. In each show, an actor will walk into a scene they know nothing about; another performer will greet them with the line, "Thank God you're here," and things take off from there.